/Engine/Source/Runtime/Engine/Classes/GameFramework/CharacterMovementComponent.h
WhenTickComponent()is called on the client again, if bUpdatePosition is true, the client will call ClientUpdatePosition() before callingPerformMovement(). ClientUpdatePosition() replays all the moves in the pending move list which occurred after the timestamp of the move the server was adjusting.Perform local movement and send the move to the server.
virtual void ReplicateMoveToServer ( float DeltaTime, const FVector & NewAcceleration )